Nutrition Types
This type of organism takes simple inorganic substances, like carbon dioxide and water, to make its own organic food.
What is an autotroph?
This is the cellular organelle where chlorophyll absorbs light energy to fuel photosynthesis.
What is the chloroplast?
This thin, transparent upper cell layer contains no chlorophyll, acts like skin, and lets light pass through.
What is the upper epidermis?
This term describes any environmental variable—like light or water—that falls to a low level and slows down a reaction.
What is a limiting factor?
This term describes nutrients like nitrogen, phosphorus, and potassium that plants require in large supplies.
What are macronutrients?
These organisms cannot make their own food and must consume other living things to obtain nutrients.
What are heterotrophs?
During the light stage, chlorophyll converts light energy into chemical energy to split this specific molecule.
What is water?
Most photosynthesis occurs in this tightly packed, long, and thin internal leaf layer that contains the most chloroplasts.
What is the palisade layer?
This specific value is reached when increasing the light intensity further fails to increase the rate of photosynthesis
What is the light saturation point?
A shortage of nitrogen or magnesium causes this specific condition, which is characterized by the yellowing of plant leaves.
What is chlorosis?
This specific heterotrophic nutrition involves secreting enzymes onto dead food material to digest it externally before absorption.
What is saprophytic nutrition?
This term describes the light-stage process where water molecules split apart, releasing oxygen gas.
What is the evolution of oxygen?
This waterproof external layer protects the leaf, allows light through, and prevents water loss.
What is the waxy cuticle?
If temperatures exceed 40°C, photosynthesis stops completely because these vital proteins are destroyed.
What are enzymes?
Plants take up nitrogen in this specific ionic form to make proteins for growth and chlorophyll.
What are nitrate ions (NO3-)?
Some autotrophic bacteria use this process to make carbohydrates using energy from the oxidation of chemicals like iron or ammonia.
What is chemosynthesis?
In the dark stage, hydrogen molecules combine with carbon dioxide to form glucose in a process given this chemical name.
What is the reduction of carbon dioxide?
This loosely arranged internal layer features rounded cells and many air spaces to allow gases to diffuse easily.
What is the spongy layer?
This is the estimated optimum percentage concentration of carbon dioxide for growing plants.
What is 0.1%?
his process occurs when dissolved nutrients dissolve in water and wash away deep down through the soil.
What is leaching?
These are the three distinct subdivisions that make up heterotrophic nutrition.
What are holozoic, saprophytic, and parasitic?
This is the vascular structure and the process name used to transport manufactured glucose to other parts of the plant.
What are the phloem and translocation?
This is why leaves are typically thin, usually measuring less than 1 millimeter thick.
What is to allow gases to diffuse into and out of them quickly?
Water limits photosynthesis during these two distinct geographical times: a tropical season and a temperate ground condition.
What are the dry season and when the ground is frozen?
This macronutrient is absorbed as a phosphate ion and is required by the plant to synthesize ATP.
What is phosphorus?